/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package edu.ccut.titan.component.impl.node;

import java.util.List;

import edu.ccut.titan.component.ComponentManager;
import edu.ccut.titan.component.IComponent;
import edu.ccut.titan.component.ILogicContext;
import edu.ccut.titan.component.IParameterContext;
import edu.ccut.titan.component.IParameterInfo;
import edu.ccut.titan.component.TitanComponentException;

/**
 * component Node is defined in logic process, recored a component information
 * 
 * @author LeslieGu
 * 
 */
public class BaseComponentNodeInfo extends AbstractNodeInfo {

	public BaseComponentNodeInfo(String id, String name, String description,
			String nextId, List<IParameterInfo> parameters, String key) {

		super(id, name, description, nextId, parameters);

		this.key = key;
	}

	private String key = null;

	public IComponent getComponent() throws TitanComponentException {
		return ComponentManager.getInstance().getComponent(key);
	}

	public String getKey() {
		return key;
	}

	@Override
	public void execute(ILogicContext logicContext) throws Exception {
		List<IParameterInfo> parameterInfos = this.getParameterInfos();
		IParameterContext context = logicContext
				.createParameterContext(parameterInfos);
		IComponent component = this.getComponent();

		if (component == null) {
			throw new TitanComponentException(
					"can't find component Object [key =" + this.key
							+ "] in node id = " + super.getId()
							+ "in logic component : " + logicContext.getId());
		}

		component.execute(context);
		logicContext
				.refreshContextFromParameterContext(parameterInfos, context);

		logger.debug("execute Component Node " + super.getId() + " "
				+ super.getName() + " in process \"" + logicContext.getId()
				+ "\"");
	}
}
